Filtering apparatus.



Patented Aug. 17, 1915.

3 SHEETS-SHEET I.

LIZ 22 30 .2 30

35:1 pm i; 5W WM W. E. HOLDERMAN.

FILTERING APPARATUS.

APPLICATION FILED JUNE 26. 1913.

3 SHEETS-SHEET 2.

l vbbwaooeo COLUMBIA PLANDDSIAPH CO.,WASHINUTQN, u.

W. E. HOLDERMAN.

FILTERING APPARATUS.

APPLICATION FILED :uuzze, ma.

1 150,369. A Patented Aug. 17, 1915.

3 SHEETS-SHEET 3. J45

wi hvwooeo COLUMBIA PLANOHRAPH CO.,\VASHINGTON, D4:v

extracting the metal therefro 'WILLIAM E. HOLDERMA N, OF SALT LAKE CITY, UTAH.

FILTERING APPARATUS.

- Specification of Letterslatent.

Patented Aug. 17,1915.

I Application filed June 26, 1913. Serial No. 775,985.

useful improvements in a filtering apparatus, and moreparticularly to an apparatus of'that class employed in the. treatment of ores by'thecyanid' process (for use for The obj ect of this invention is to facilitate the washing of ore slime and to thoroughly and efiiciently separate themetalin solution from the slime. l i

A further object is to provide means whereby wash water may be introducedinto the filter while the process of drawing off the metal in; solution is being carried on,

I thus permitting a continual operation of the filter without interruption-caused by the introduction of the wash waterl 7 Another object is to provide a plurality of filter leaves cooperating with a series of inletsand outlets whereby wash water may be introduced into the alternate leaves at the same time that the process of drawing off the metal in solution is being carried on in the other leaves, thus permitting the washing and discharging operation to be carried on simultaneously. Thus it is to be noted that the introduction of the wash water will assist in the effective separation of the slime and the 'metalin solution, and by this means therewill be obtained a higher degree of purity in the filtrate as well as a more efiicient operation of the filter.

vA still further object is'to provide means for flushing the filter leavesfrom the deintroducing posits of slime formed thereon during the filtering process, andto effect this flushing without interruption of the operation of the filter. I 7

Another object isrto provide means for wash water into every part of the filter leaf with a view to thoroughly flushing the same.

Still another object is: to provide means for drawing off the slime during the operation of the filter.

Finally, an object of this invention is the provision of means for quickly reversing the process of introducing the wash water into the alternate leaves and causing the washing process to be carried on in the other leaves and enabling the process of drawing off the filtrate to. be substituted in the "leaves first named. Thus there will be obtained a maximum eificiency in the operationof the filter as well as a thorough cleansing and washing of every part thereof, without any interruption whatsoever of the operation of the, filter, thus enabling acontinuoususe of the same,

tion in expenditure.

With these and other objects in view, the invention consists in the construction, arrangement, and combination ofparts hereinafter more fully described in a preferred form, reference now being made to the accompanying drawings, in which:

- Figure l is a side elevation partly in section to show the arrangement of the filter leaves; Fig.2 is a plan to show the means for introducing-wash water into the leaves and also the means for drawing off the filtrate; Fig.3 is an end view partly in section showing the means for drawing oil the slime from the bottom of the tank and also to show connections or the leaves with the means for introducing the wash water and the means for drawingofl the filtrate.

As shown in the drawing, 1 indicates the tank which may be of any suitable construction, but preferably pentagonal in shape, having the top wall 2. and the side walls 3 and 4: at right angles to each other,'and the two bottom walls 5 and 6 sloping toward each other to form a trough like cavity in the lower portion of the tank.

Disposed within the tank 1, and spaced at regular intervals therein are the filter leaves 7 formed of a frame work of jointed piping covered with a suitable filtering fabric. This frame work consists of a horizontal pipe8 parallel to the top 2 of thetank and extending to its opposite ends thereof. Se-

cured to the ends of the horizontal pipe 8 byv suitable coupling means, are the vertical pipes 9 and 10 which are in turn coupled at their other ends to the inwardly sloping plpes l1 and 12, the opposite ends of which are secured to a pair of vertical pipes 13 and 14C extending upwardly on each side of the vertical center line of the frame work and jointed respectively at 15 and 16 to the a result which will effect the sav-s ing ofmuch time and a consequent reducfirst, thorough and effective flushing of one series of filter leaves and second a material assistance in the filtering operation of the 7 other set of filter leaves, as well as a comsuction pump 27 the plete separation of all of the entire valuable product from the residue.

When the slime has accumulated to such a degree on the exterior surface of the leaves, coupled to the system acted upon by the operation is reversed, causing the pump 26 to introduce wash water into the pipes 31 and 32 and-thence into the leaves cooperating therewith, and

the pump 2? toeXert its suction on the pipes 19 and 20 and the previously cleansed filter leaves coupled thereto. The series of valves 42 are then opened by rocking the shaft 46 and raising the stems &3, thereby allowing the slime to pass out of the tank through the openings 37, 38, 39 and 40 into the waste trough 41 from whence such suitable disposition thereof may be made as desired. By raising and lowering the trough 49 the supply of cyanid into the tank may be regu lated to the degree desired.

In the improved construction shown, applicant has thus provided means, whereby wash water may be introduced into the filter while the process of drawing off the metal in solution is being carried on, and opera tion permitting a continuous and entirely uninterrupted working of the filter. The plurality of filter leaves disposed alternately on the several pipe connections permit wash water to be introduced into the alternate leaves, thus effecting a simultaneous discharging and washing operation, as well as a much more effective separation of the slime from the metal in solution than has been heretofore obtained and a consequent higher degree of purity in the filtrate.

The result of conveniently and quickly drawing off the slime from the filter tank is also accomplished by the means shown and described in this specification. Applicant has further accomplished a quick reversal of the process of introducing the wash water into the alternate leaves and causing thewashing process to be carried on in the other leaves and enabling the process of drawing olf the filtrate to be substituted in the leaves first named. Consequently, there will be obtained a maximumefliciency in the operation of the filter as well as a thorough cleansing and washing of every part thereof, without the slightest interruption of the operation of the filter, a result enabling a continuous use of the same,

Hence two.

thereby effecting a saving of the time usually caused by cleansing the metal from its ores by the cyanid process, it

is to be understood that this apparatus is not to be limited to the operation described herein.

Although the particulars of the present invention have been fully set forth, yet it is to be distinctly understood that the invention is not limited to the process structure described, buton the contrary any modifications are included which may be made without departing from the spirit and scope thereof. 1

That is claimed is:

1. In a device of the class described, the combination with a tank, of a series of filter leaves within said tank, means for introducing fluid into an alternate series of said leaves, and means for simultaneously drawing ofi' fluid from the other series of said leaves.

2'. In a device of the class described, the combination with a tank, of a series of filter leaves within said tank, means for drawing 01f filtrate through an alternate series of said leaves, and means for flushing the other series simultaneously with the drawing off of said filtrate.

3. In a device of the class described, the combination with a tank, of a series of filter leaves within said tank, means for drawing off filtrate from an alternate series of said leaves, means for flushing the other series of 7 said leaves, tank.

4. In a device of the class described, the combination with a tank, of a series of filter leaves within said tank, means for drawing and means for draining said I ofi filtrate from an alternate series of said other series of said leaves, means for reversmg the travel of said fluid, and'valve actuated means for draining said tank.

6. In a device of the class described, the combination with a tank, of a series of filter leaves within the tank, and a pair of pumps for simultaneously introducing'and drawing ofi' fluid from alternate series of leaves.

7. In a device of the class described, the

leaves mounted in thetenk, a pair ofpumps nesses; V

for simultaneously introducing and draw: I V e j ti I I ing off fiuidfrom an alternate, seriesjkof IL I 5 leaves, and means forreversing the travel of Witnesses: V

the fiuid V A. M.'C AR V In testimony whereof I have hereunto set V D VE." BRAYTONV.

combination with a tank, of a series of filter my handinpres enee oitw'o subscribing Wit? qop i e s 0' this'patent may be obtained fer f ve cents eaeh, by eidres sii giti e icqmmiesioneilof a t e1 1t W shin on, Q-L 1. 7 

